Zèta Beta B3 sneakers pair a vintage-inspired silhouette with a corn-based upper and a profiled platform sole for everyday comfort. Model: Beta B3 — Designer: Zèta. Key attributes: Black | Nero | Corn-based material | Flexible (Strobel construction) | Lightweight | Breathable | Lace-up closure | Removable insole | Two pairs of laces (contrast + white) | Rounded toe | Striking side logo | Contrasting heel detail | Profiled platform sole | Dimensions & fit: Heel height: 35 mm | Front sole height: 22 mm | Regular fit | Standard width | Composition & care: Upper: 73% bio-PU (corn), 27% polyester | Laces: 100% cotton | Removable insole: 100% foam | Outsole: synthetic rubber (40% content) | Glue: resin-based (vegan) | Label: polyester | Do not wash. Spot clean with a damp cloth. Use a sneaker cleaning kit for tougher stains.